Question

Aflati valoarea expreaiei: va roggggggggggggggggggggggggggggg

Answer 1

$b)~(-2)^{-2}+ \big(\frac{1}{2} \big)^{-3}+ \big( \frac{1}{7} \big)^0= \\ \\ = \frac{1}{(-2)^2}+ 2^3+1= \\ \\ = \frac{1}{4}+8+1= \\ \\ = \frac{1}{4}+9= \\ \\ = \frac{37}{4}.$